An Irishman was ordered to appear in court because he had been present at a shooting incident. When he entered the witness-box the judge asked him if he'd actually seen the shot fired.
"No, I only heard the shot," was the reply. The judge then told the man to stand down as his evidence was of no use at all. Just as he turned to go, the Irishman laughed and made the court roar. The judge called the man back and told him that since he had laughed he had a good mind to sentence him for contempt of court.
"But, did you see me laugh?" queried the man.
"No, I heard you, and that was enough," growled the judge.
"Well, your honour, that sort of evidence, we have just been told, is of no use at all," responded the man.
"Next witness!" cried the judge.